MSI KATANA GF76 MS-15821 - Not powering on

[Lgolebio]

MSI: Katana GF76
Motherboard: MS-15821 Ver: 2.1
CPU: Intel® Core™ i7-11800H
KBC: KB9548QF

Motherboard in power off state consumes 0.040A. It reacts on power switch and consumes 0,041A. KBC programmed, BIOS programmed, no difference. 3,3V and 5V are working. No liquid damage. Resistance on coils below:...

[martin83]

Hello everyone.
I'm here to ask for help troubleshooting an issue with my Acer Nitro 5 An55-515. Board number fh51m LAJ871P .
The laptop turns on without any image, and after inspection, I noticed the 1.2V voltage was reading 8V spikes. The PQM1 MOSFET's gate was shorted to the source.
I replaced PQM1, PQM2, and PUM1. After turning on the machine, the 1.2V voltage appears correctly for about 1 minute, but after that, PQM1 shorted again. The MOSFET and controller assembly has already been replaced twice and continues to blow. I can't understand what's going on. I should also add...

[Ellos]

ASUS Zenbook UX6404VV-M3005W
remove bios password, i tried saving current bios with aptio 5 afu but tool can't read bios content so i decided to get some help before doing smthing irreversible,

SN=R4N0CX01M525140, CN=J1WJ, MFD=2023-04, P/N=90NB11J1-M00050

post moved...next time look for a thread with the name and model, motherboard model of the laptop, and post there, if you can't find it, then make a new thread.....

[mohamedbalwe]

hello everyone
i need bios dvr DS-7204HQHI
motherboard code 80303-p rev 2.2
The attached file is lock pass...

[Khôi Minh]

Help me
ST : 40SMTC3...

[jm1234]

Hi,
it's a PoE camera and it stopped working. Using thermal image I identified failing component U22 marked as 16AF which seems to be buck convertor TI https://www.alldatasheet.net/datashe...62569DBVR.html. I took it out and It is inteed shorted on the output. However, after I took it out, the resistance between the output pads (on the board) still shows 190ohm, is that bit low?
Another issue is, seems to me I must be missing one of the tiny resistors R810 that should make up the voltage devider for the buck convertor. Honestly I did this months ago, I cannot...

[unimatrix93]

Dear forum

My Samsung fridge died from a fault on the mainline and the transformer (https://www.hqelektronika.hu/hu/halo...-w8-da2600009k) died.
No voltage on the secondary, measuring resistance shows open circuit. I concluded a blown fuse which is deep inside the transformer, I don't think I can disassemble it to replace the fuse.

The second problem is that I cannot find an original replacement part anywhere or even If I do it's pretty expensive.

My question is: Can I replace this transformer with a generic 230V to 17V one? The output has 4...

[starbio7]

Am trying to repair my desktop motherboard that suddenly wont boot.
I noticed that a surface mount capacitor has blown and also there is now a short between +12V rail to GND.
Any help is appreciated.

[sunofra78]

Hi.
Does anyone have iPhone 12 Pro Max Schematics they can share? I have the board view through ZXW... but really need the schematics.
Thanks!...

[Aliencomputres]

Hello, does anyone here have a backup of nvram with resettable ink chip?
Thank.